Automatic electrical release starter.



.PATENT-BD JAN.14. 1903. A. J. BURNS. AUTOMATIC ELECTRICAL RELEASESTARTER.l

APPLICATION FILED MAR.151907.

5 noe/nidi @19H11 @aan akami? Novze. FATENTED JAN. 14. 1908. A. J,BURNS.

AUTOMATIC BLEGRICAL RELEASE STARTER.

APPLICATION FILED MAR.15,1907.

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v I' l l www PATENTED JAN. I4, 1908.

A. J. BURNS. .AUTOMATIC ELECTRICAL RELEASE STARTER.

APPLICATION FILED MAR. 15. 1907.

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ATBNTBD JAN. 14. 1908.

A. J. BURNS.

AUTOMATIC ELECTRICAL RELEASE STARTER.

APPLICATION FILED MAR.15. 1907.

4 SHEETS-SHEET 1L.

ations,

ANTHONY. BUR-NS, OF OSWEGO, NEW YRK.

AUTOIMATIC ELECTRICAL RELEASE-STARTER.

specification of Letters Patent.

Patented Jan, 14 1908.

pplication tiled Merch l5, 1907. Sariil No. 362.514,

To all whom it mcy concern:

Be it known that l', ANTHONY J. Ecrins, e citizen of the United States,residing'ttt (lewego, in the county of Oswego und Stute ot New York,have invented ed new and useful Automatic Electrical lrelcsseter-ter;and l do hereby declare the following to be e full, clear, sind exactdescription of the invention, 'such es will enable others skilled in theort to which it oppcrtsins to ineke and use the sinne.

This invention pertains to un automatic release starter, adapted for usein connes tion with alternating current motors, 'for the purpose ofstorting the seme.

ln connection with :in apparatus of the shove type, and shown in thedrawii'igs, the invention sinus es an essentiel and primary object toprovide device oit this character, whereby, in cose ol failure4 oicurrent supply, the outon'nrtic switch oi the device will be broughtinto operation, therebyr shutting' down the motors. lhis device willautomatically, es will be understood, open the circuits, therebyolivier/ing the necessitj)T ol the operutor being; in rendiness to do sobv hund, that in cese oi i'ailure ol current supply, ss above stated.

When the motor circuit 1s open the motor l is desd end will remain sountil the operator closes it signin, thus leaving so thut the operatoret the station may reestablish the current supply without den ger to themachines on the circuit. lihis device snves considerable time, 'whichunder the previous syste-ni oi hand control sppsril-tus wus wasted. ,ithas been iouud, es will be understood, that ull motor circuits should beopen before sending; current over the lines.

This invention comprises further obiects und combinations of elementswhich will be hereinafter more fully' described, shown inv theuccmnpuuying drawings, und the novel features thereof will he pointedout b v the up )ended claims.

lo obtain n full and correct understend ing oi the det-cils ofconstruction, conlbinfid tions olE ieutures, elements and edv'unteges,reference is to be hed to the 'iereinsitcr forth. description und thescconiprtnyin drawings in connection therewith, who e:

Figure i is u front elevation of :in sp; u rutus ol the shove set forthtype illustrating; t'he invention. Fig. it is o side eleva-tion of thedevice,illustruting more clcsriy the conthe lines' open,"

struction 'to the right of the sutomatic switch. Fig. 3 is e sectionalView on the line SW3 of Fig. 1, for the purpose of illustruting moreclearly and Adiegrammatically the location ol' the primary and secondarytrsnst'oriner. Fig, 4 is u detail perspective View of s portion of theautomatic switch, showing the operating handle therefor.

Fig. 5 is s sectional view through the ineens for operating theoscillatory clutch ber,

Melting renewed reference to the accompanying drawings, wherein similarreference characters indicate corresponding parts in the severalillustrations, by -figures, l desiO- netos un iron box, in the center ofwhich 1s located primer 'f and secondary windings of the transformers oand l), which seconduries of the transformers src utilized in startingup, by the operation of the hand operated switch hereinafter described,so that the current to the motors will be supplied at a. low voltage,that is when the hund operated switch is thrown into cooperation withthe lower set of terminals 66, which areiheavily fused to carry theheavy current for starting. The equiva lent of the ntrsnsliormers, suches induction resistance, or any other substitute, may be employed,ifdcsircd. tUpon the front of this iron box ure vlixod :in upper andlower set of terminals 11 end il, whichA :ire fixed to a, nnirhlc slabc, this marble slab closes the iront of the iron box, es shown clearlyin Fig. 3 oi the accompanying drawings, and is secured in position byIneens of screws d, or any othersnitsble ineens. The upper row of thelower set oi terminals and the lower row of the upper set of terminalsare electrically connected, shown et e; all of these terminels arefastened to the marble slab by their shank portions f thereof, beingpassed through apertures g, in the said slab, and securely lixed, byineens of nuts 8, es clearly' shown.

To cooperate with the terminals, either the upper or lower set thereof,is an automatic sviitch la having knife blades 2, to coperatie with thelower set of terminals, and brushes 3,. comprising copper strips havingtherebetween strips of mica, 'there being three of these brushessimilarly constructed, which tre clamped to concave portions 4 of theswitch l, by :means .of convexed strips of bress 5, und screw 6, so esto provide resiliency for the seid brushes, as will Ibe cleerl evidentfrom the drawings. This switc comprises a shaft 7, journalcd in suitablebearin 8, which shaft extends and rotates paralle with the face of themaible slab; projecting .from this shaft is a plurality of stub shafts9, to which are secured the clamping memberslO of the concave portions4, and of the knife blades 2 by means of screws 11b. Surrounding thestub shafts 9 and adjacent to the inner faces of the clamping membersare sleeves 12, of any suitable insulat' material, for the purpose ofinsulatin t e brushes and blades.

. gThe -upper ends of the stub shafts are providedwith flan es 13 whichare secured thereto b means o screw threads 14, to prevent dislp acementof the sleeves.

"cam eement 23, integra the circuit ojecting upwardly is an operatingcrank arm 15,l which is slightlyrearwardly positioned by means of acompound curve therein; this crank arm is provided y.with a hand rip 16,and below this grip is an opening 17, esigned to partly receive the endof the oscillatory clutchl -bar 18, the operation of which will behereinafter described, which end thereof is bifurcated, as at 19, toreceive an anti-frictional roller bearing 20, the shaft of which isjournaled in the arms 21 of the said oscillato bar, which arms areformed by the said blifyurcation. This roller'bearing is desi ed toengage the rojection 22, of a lpor otherwise secured-to the crankarm,for the purpose" of holding the brushes resiliently in contact with theupper set of terminals, so as toclose etween them. The roller bear- Aing is held in' close engagement with said projection by A'a spring 24,one end of which i's secured to an eye 25, carried by the horizontallyextending arm 26, of .the oscillatory clutch bar; while the other endthereof is sc cured to a screw 27, which is adjustably fastened to alaterally projecting lug 28, of the iron box, b means of the nuts 29, aswill be clearly evi ent. It is equally manifest froman examination ofthe drawings, that the pivot 30 of the oscillatory clutch bar is of theadjustable type, thus effecting a close contact between the brushes andthe upper set of terminals, and also compensating for the wear upon thesaid brushes. This adjustable pivot is obtained by means of a plate 31 yhaving' the pivot in 32, upon which the clutch bar is pivoted), and heldthereto by any suitable means, referably a screw 33. This plate isprovided) with four slots 34, through which the screws 35 projectingfrom the side of the said iron box, extend for the purpose of holdingthe said plate immovable when desired.

' guided in its The downwardly and rearwardly projecting arm 36 of theoscillatory clutch bar is movement by a bridge plate 37 securelyfastened to the side of the box, clearly shown in the drawings. This arm36 is provided at its lower portion, with va horizontal projecting orrion 3S, upon which the weightV 39 falls, `w iii-h weight is guided inits fall by means of thi` guides 4() and 41, which guide 1 is providedwith an opening 42 upon its side near the top thereof for the receptionof the upper und 43 of the oscillatory latch bai', which is suitablypivoted, as at 44, the operation of which latch bar will be hereinafterdescribed.

The lower end of the latch bar is bent at right angles, as at 45, and isprovided with an enlar fed portion 46, carrying an armature 48, whidliis to be attracted by the magnet 49, when energized, which magnet is ofthe three phase type; the cam 50, at the upper end of the latch bar,will be held in the opening 4 2 of the guide 41, and into engagementwith the friction roller bearing 51, journaled within the notch 52, ofthe weight 39, that is, when it is in its upper position, as will beevident. When the said magnet is in an energized condition, its currentis received from the generator 72 through the leads 81, as will beclearly manifest.

For returnin the weight to its upper position it is provi ed with athumb piece 53, as clearly shown. To prevent the 'arm 36 from beingbent, at a point where it would strike the side 54 of the bridge plate37, when oscillated by the fall of the weight, a stop 55 having a rubbercovering 5 6' is provided, as clearly shown. The lower face of theweight is valso provided with rubber 57 toobviate the jar of the suddenfall thereof, against thehorizontal rejecting portion 38 of the arm 36,as will Ee understood.

When the magnet becomes denergized through the failure o f currentsupply, the cam 5() will be disengaged from the roller bearing 51, 'bycontraction of the sprin 58, and the said latch bar having the cam belimited by the stop 59, as clearly shown in the drawings. lOne end ofthis spring is attached to an eye 60, of the latch bar, while the otherend is fixed to an adjusting screw 61, mounted in a stud 62, which screwis rendered adjustable by means of vthe'wingcd nut 63, as is clearlyillustrated in the drawings. Upon two of the sides of the iron box arepositioned a cabinet 64, in one of which, is located the oscillatoryclutch bar and the releasing means therefor, while in the other islocated the hand operated switch 65, and the upper and lower cooperativeterminals 66 therefor, which terminals and the A)ivot 67, for the saidswitch, are securely fixed to a marble slab (5S, as will be apparent.

l 1l are electrically connected by the leads 69, with the secondary ofthe transformers, while the upper row of the terminals 11 are upper setof terminals 11 as shown at e, as l hereinbeforc stated; the leads 71electrically are secured to the shh` of the iron box; the

The lower row of the lower set of terminals electrically connected tothe lower row of the sirenes Connect the upper set of terminals Go ofthel A hund operated switch und the upper row of the terminals 1l, kofthe automatic switch; and the transformers a and b electrieell.

eonnectedto the lower row of the terminals the leeds 73 with theterminals 67, oi' the hand operated switch, which terminals (57 form thepivot for the seid hand operated' switch, es will be readily understoodfron a thorough examination of the drawings in.

corniection with the herein description.

in event of failure of' the current supply,

the automatic switch will he released from engagement with the clutchbar, efter which the said automatic switch will vibrate, prior toassuming e constant horizontal position, at right ongles to the fece ofthe iuzirhle slah c; this Vibration of the automatic switch is obtainedhy ineens of the springs 75, which are 'wound in opposite directionsuhout the l' Shaft 7, each of which springs has one end thereof fixed toseid shaft, while their other lends are fixed tov the slab c, es et 76,as will he clearly manifest. The upper row of the terlninnls V`1i ure incircuit with the motor HU and the motor generator 72, by the leeds Si,as clearly shown in Fig.y 1 of the eccomiponyn ing drawings. The hondoperated switch is of the three ole linife t f )e hufviiw the usuel.

d il hv Ifuses, lund, the cabinet 'for inclosing seid switch is linedwith shite, or eny other suit-' t knhle materiel; this hund operzttedswltch is only utilized' whon it heroines necessary to shut down themotor, hut the :u itoiuntic switch could he operated `for this purpose,yet it is not 1good policy to do so, es there is o onsideu'nhle nrcing,reused hy opening the eircuit-of un eppur-tus of this character, whenrunning` under loud. rlhis automatic .switch is opereted in twodirections, lirst the downward, or starting position, second the upwardor nigh voltage running position; when in the downw rrd position, theswitch blades close the ffircuit between 1the two lower sets ofteriniuuls, thereby ullowiirgT u,l

low wiltege current to poss from the secondories el" the tre-ristoro, tothe motor, when operated in the uiniwurd, or running position, thehrushes will cot'ipernte with the upper set of terminals li, which willclose the circuit therehetween, tuerehy allowing,r the high vol-- tegecurrent to pees directly freni the feeders to the motor. y

In starting, the hund switch is thrown to its lower position und intocooperation with the ti-niniiiiels dwhich nre heu. 'il" "used to carrythe heavy current 'for stfirlinpj. rihen the uutoi'untic switch thrownfrom .its new trol position to its lew'er. position und into coperatienwith 'the terminals l l the motor is then receiving4 current at lowvoll; ge from the seconderies of the transformers. l/l/'henJ the hundoperated switch und the automatic switch ere in engagement with thelower set of terminals 66 and 1l', current leaves the generator 7 2through the leeds -73 to the teriuinels 67, of the hand operated switch,through the vblfides thereof und the lower of tern iuels 66, then thecurrent advances through the transformers, through the uiediuiu of theleads 66a, end through the lends (ii) to the lower of teruliunls 11',through. the hludes 2 oi the eutoumtic switch, that is to sity, when inits lower position, to and tl'u'ough the upper of terminals 11', thusadvancing' ou to the three phuse motor 8l), through the lends Sl es willhe readily truced from the drawings. rl his current when the twoswitches nre .in their lower position, is flowing' in rapid succession,through one leud end thon4 the other, und then heck signin through oneol" them that is not utilized for the advancing current; it will hereadily ol served, from the shove, that the motor 8() is recoisingfcurrent et e low voltage from the sccondnrics of the transformers. Aftertho motor hns started hoth hund und -nutoiuotic switches are lifted totheir ripper position und into -o 'ipe.":ition with the upper set oftermi-- nuls, und while in this position the motor or generator isthrown directly across the line, therolry-cutting thc trnnsforiners outof rircuit. lfhen the :uitouintic switch is thrown into cooperation withthe terminals 'll it is held in close contact therewith, hy the clutchher, .until relcusod hy the releasing` niccloinA ism, which is operatedthrough the failure of current supply. `when the hund operated undautomatic switches aire in their upper positions, es shown in Fig. l oithe drawings, current leen/es the generator, advancing through the leads73, that is, alternately through one und then the other, to theterminnls (37, through tle hhides of the switch (i5 und through theupper set of lern'vinals 66, to the upper set of tern'iinels ll, throughthe inediu'ui of the leads 7] und then the eurrei'it advances on throughto the upper set of terminals ll, through the hiushes Send the metallicelectrical connections e, upon the heel; of the merhle slab c, then thecurrent continues ou to the motor, through the leeds Si, :is will heclearly manifest` l his current is also flowing in rapid succession, aswhen the seid switches nre in their lower positions; thus it will heseen, when tracing this lustmentioned flewy of' current, that thetransfmrners ore eut out of the circuit, and the motor und generetor erethrown directly across the line, thereby generating e, high Voltegecurrent. This .failure of current' su pply muy he eitherenused hy e.breakage nlongthe hue, or hy thro wing the h end operated switch to ahorizontal or ueutrel position, es will he manifest.

it .is to he understood that `various changes end modifications muy heemployed Iin the 1 ate with said switch, Yand a vertically movment withthe upper set ot' tcrminals,- and means for releasing'said adjustablemeans.

construction and embodiment thereof, coirbinations of features, andelements, without in any way departing from the spirit and scope ol theinvention covered'by the claims thereof; it being understood lthatwhatever g variations. or modifications are employed must fall withinthe scope of the appended claims.

From the foregoing, the essential `features, elements and the operationol the device, together with the simplicity thereof, will be clearlyapparent.

Having thus fully described the invention, what is claimed as new enduseful by the protection ot' Letters l)atent,"is:-

l. ln an automatic release cr no' voltage starter, "an automatic switch,terminals therefor, an oscillatorqiiclutch bar to coperable member foractuating the clutch bar and an electrically'controlled latch. bar forsupporting said member.

2. ln an automatic release starter, an automatic switch, terminalstheretor, an adjustable oscillatory7 clutch bar, releasing meanstherefor, and electrical operated means lor controlling said releasingmeans.

3. ln an automatic release starter, an automatic switch, terminalstherefor, adjustable means for holding said automatic switch in closecontact with its upper set of terminals, a vertically movable member lorreleasing said adjustable mea-iis, an electrically controlled latch' barfor releasing said` ngember through the failure of current suppi. ln anautomatic. release starter, an automatic switch, knife blades andbrushes g carried by said switch, an upper and lower set of terminalstherefor, adjustable. means for holding said brushes in close engage-5.111 an automatic release starter, a switch, an adjustable lever*controlling the same, and-a movable member controllable by the currentsupply and adapted to be relever to release the switch.

l leased by 'failure thereof to actuatc saidl l 6. ln an automaticrelease `starter, a;

switch, a lever controlling the same, and a for holding said brushes inclose engagement gravitating member controllable by the current supilyand adapted to be released by failure thereof to actuate said lever tore-l lease the switch and vertical guides for the gravitating member.

7. ln an automatic release starter, a switch, .an adjustable lcvcrcontrolling thc same, and a gravitating member controllable by thecurrent supply and adapted to be released by failure thereof to actuatesaid lever to release thc switch. l

8. ln :in automatic release starter, a

switch, an adjustable pivotcd lever' controlling the saine, and agravitating ineinerases bei' controllable by the current su ply andadapted to be released by failure t ereof to actuate said lever torelease the switch.

9. ln anautomatic release starter, an

automatic switch, an adjustable pivotedl clutch bar controlling thesaine, and a mov able member controllable by the current supply andadapted to bc released byfailure thereof to actuate said pivoted clutchAbar vertical guides for the movable member.

10. In an automatic release starter, ati

automatic switch, an adjustable pivoted clutch bar controlling the same,and a mov? able member Vcontrollable by the current supply.

il. In an automatic 'release starter, an automatic switch, an adjustablepivoted clutch bar controlling the saine, and a gravitating membercontrollable by the current supply and adapted to be released by failnure thereof to actuate said clutch bar to release the switch.

12. ln an automatic release starter, an automatic switch, .an adjustable clutch bar controlling the saine, and a gravitating membercontrollable by the current supply.

13. In an automatic release starter, an'

automatic switch, an adjustable pivoted means controlling the same,`anda gravitating member controllablel by the current supply 'and adapted tobe released by failure thereof` toactuate said adjustable pivotcd means.

1 4. In an automatic release starter, an automatic switch,4 anadjustable pivoted means controlling the same, and a gravitatirg membercontrollable by the current supe r `15. ln 'an automatiorelease starter,an automatic switch having knife blades and brushes, an upper and lowerset of terminals therefor, an adjustable clutch bai` controlling theswitch, and a gravitating'niember controllable by the current supply andadaptedto' be released by failure thereof to actuate said clutch bar.

` i6. ln an automatic release starter, an'

i automatic switch having knife blades and brushes, an upper and lowerset of terminals thereior, an adjustable pivoted clutch bar 'holdingsaid brushes in close engagement with the upper set of terminals, agrayitat'# ing member, a spring actuated latcli'iarfoi supporting saidgravitating member and controllable by the current supply and adapted.

vco

'as'ftion of the cam for holding said brushes in gaged by said clutchbar and an independent golfing.,

latch bar .a catch, an adjustable pivoted clutch bar-de- Acloseengagement with the upper'set 'o ter- "l leased by failure thereof toactuate said clutch l ndin arm said arm havlnff a cam forminor D D rentsupp y and adapted to be re eased by.

erases to be released by failure thereofto actuate 1 said clutch bar.

'125.v In an automatic release starter, an automatic switch, havingknife blades and brushes, an. upper and lower set of terminals therefor,an ad}ustable pivoted clutch bar for said brushes 1n close engagementwith the upper set ofterminals, a movable member, indes therefor, aspring actuated Ier supporting said movable mem-- be;` and controllableby the current supply arid adapted to be released by 'failure thereof toaetuate said clutch bar.

19. In an automatic release starter, en automatic switch having knifeblades and brushes, an upper and lower set of terminals therefor, saidswitch having an upwardly ex* tending arm, said arm having a cam'forming signed to engage said catch through coperatlon of the cam forholding said brus es in minals, a movable member, guides therefor, saidmovable member being controllable by the current supply and adapted tobe rebar.

r A20. In an automa-tic release starter, van automatic switch havingknife blades and brushes, an upper and lower set of terminals therefor,said switch having an upwardly exa catch, an adjustable pivoted clutchbar designed to engage said catch through coperaclose engagement withthe upper set of terminals, a movable member, guides therefor, a springactuated latch bar for su )porting said movable member and controllableby the current supply and adapted to lgiased byfailure thereof toactuatc said clutch ar. 21. In an automatic release starter, anautomatic switch, a sprin0r actuated adjust able pivoted clutch bar forcontrolling the same, a movable member controllable b the current supplyto be released byfailure t ereof to act'uate said clutch bar.

'22. In an automatic release starter, an automatic switch having anupwardly extendingarm, said arm havmg a cam forming a catch, a springreturned adjustable pivoted clutch bar designed to enga e said catch forcontrolling the same, a mova le member controllable by the current suply and adapted to be released by failure t ereof to actuate said clutchbar. y l

23. In an automatic release starter, an automatic switch having anupwardly extendin arm, an'oscillatory spring returned clutch ar, saidarni havingmeans to be engravitatin member controllable b thecurfailurethereof to actuate said clutch bar.

2d. In an automatic release starter, an automatic switch having 'anupwardly sie tending arm., an adjustable pi'voted spring returned clutchbar, said arm having means to be engaged by said clutch bar,agravitating mem ber controllable by the curren t supply and adapted tobe released by failure thereof to actuate said clutch bar.

25. In an automatic release starter, an automatic switch havinganupwardly exm tending arm, ran adjustable spring returned clutch bar,said arm having' means to be engaged by said clutch bar, a gravitatingmeub ber, guides therefor, a pivoted supporting latch bar to supportsaid gravitating member, said latch bar having an armature at its lowerend, a magnet controllable by the curn rent supply for controlling saidlatch bar, through the i'ailurc of which current supply the magnet willbe controlled for releasing the pivoted latch bar.

26. In an automatic release starter, an automatic switch comprising alshaft having a plurality of' stud shafts, knife blades and brushescarried by said stud shafts,- said automatic switch having an upwardlyeX- tending arm, an adjustable pivoted spring returned clutch bar, saidarm having a cam forming a catch device to coperate with said clutchbar,movable member, guides therefor, a ivoted latch bar for supportin saidmovab e member, an armature carrie' at the lower end ci said latch bar,a magnet controllable by the current supply for attractinr said armature'for controlling said pivoterly latch bar through the failure of whichcurrent su ply the magnetV will be denergizedthere )y releasing thcpivoted latch bar. i

27. In an automatic release starter, an automatic switch comprising ashaft havin a plurality ci stud shafts, knife blades an brushes carried,by said stud shafts, said automatic switch having an upwardlyextendingnrm, au adjustable pivoted spring returned clutch bar, said armhaving 'a cani forming a catch device to vcoperatie with said clutchbar, a movable member, guides therefor', a pivoted spring returned latchbar .for supporting said movable-member, an

armature carried at the loweriend of said latch bar, a magnet.controllable by the current su ply for attracting said armature Vforcontrol ing said 'ivoted spring returned latch barthrough t e 'failureof wlnch current supply the magnet will be denergized therebyre easingthe pivotedlatch bar.

28. In an automatic release starter, an automatic switch comprising ashaft havin?r a plurality of stud shafts, knife blades an brushescarried by said stud shafts, an upper and lower set of terminals tocooperate with said .knife blades and brushcsj'said switch having anupwardly extending arm, a pivoted spring returned. clutchbar, said armAthus releasing said latch bar, a generator in circuit with saidautomatic starter andl l primary and secondary transformers 1n the icircuit of said generator and automati'. l

Astarter for decreasing and increasing the voltage thereof'.

29. 'In an automatic release mechanism, an automatic switch, a pivotedclutch bar, controlling the same, and an independent movable non-pivotedmember controllable by thecurrent supply` 30. In an automatic releasemechanism, an automatic switch, a pivoted clutch bar, controlling thesame, an independent movable memrber controlled by the current supply,andV guides for the said member.

' 31. In an automatic release mechanism, an automatic switch, terminalstherefor,

means for controlling the same, and means movable by itself forreleasing the firstnamed means, and a pivoted latch bar controllable bythe current supply for controlling said movable means.

Y 32. In an automatic release mechanism, an automatic switch, adjustableivoted means for controlling the same, an independently guided 'meansfor releasing the said first-named means. l

33. In an automatic release mechanism, .an automatic switch, adjustablemeans for controllingthe same, and independently guided means forreleasing 'the said firstnamed means, said independently guided meansbeing controlled by current supply and adapted to 'be released throughthe failure thereof.

34. In an automatic release mechanism, an automatic switch, adjustable`means for controlling the same, and independently guided means forrelfasing said adjustable 35. In an automatic release mechanism, anautomatic switch, adjustable means for controlling the same, anindependentl movable member for releasing said mi 'ustable means, anelectrically controlled atch bar for releasing said movable member.

36. In an automatic release mechanism, an automatic switch, means forcontrolling the same, and independently movable guided member forreleasing said controlling means and a pivoted latch bar controllable bythe current supply for releasing said member. 'l

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.V

ANTHONY-J. BURNS.

W'itnesses:

THOMAS N. DEWINE, Jas. A. HEArm's.

